F25B 21/00
Machines, plants or systems, using electric or magnetic effects
F25B21/00 (Machines, plants or systems, using electric or magnetic effects) appears on 2,731 US grants and 3,225 published applications in this corpus.
Search patents in F25B- Granted patents
- 2,731
- Published applications
- 3,225
- Assignees
- 1,363
- Inventors
- 5,666
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 15 | 0 |
| 1982 | 18 | 0 |
| 1983 | 8 | 0 |
| 1984 | 21 | 0 |
| 1985 | 21 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 22 | 0 |
| 1989 | 18 | 0 |
| 1990 | 21 | 0 |
| 1991 | 31 | 0 |
| 1992 | 21 | 0 |
| 1993 | 23 | 0 |
| 1994 | 23 | 0 |
| 1995 | 25 | 0 |
| 1996 | 34 | 0 |
| 1997 | 33 | 0 |
| 1998 | 37 | 0 |
| 1999 | 58 | 0 |
| 2000 | 53 | 0 |
| 2001 | 42 | 13 |
| 2002 | 71 | 47 |
| 2003 | 71 | 52 |
| 2004 | 48 | 64 |
| 2005 | 32 | 75 |
| 2006 | 40 | 89 |
| 2007 | 45 | 83 |
| 2008 | 32 | 95 |
| 2009 | 29 | 105 |
| 2010 | 40 | 96 |
| 2011 | 49 | 97 |
| 2012 | 47 | 106 |
| 2013 | 56 | 125 |
| 2014 | 67 | 169 |
| 2015 | 77 | 156 |
| 2016 | 117 | 158 |
| 2017 | 154 | 190 |
| 2018 | 141 | 204 |
| 2019 | 144 | 193 |
| 2020 | 150 | 215 |
| 2021 | 134 | 179 |
| 2022 | 139 | 161 |
| 2023 | 129 | 142 |
| 2024 | 121 | 151 |
| 2025 | 129 | 146 |
| 2026 | 78 | 114 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of controlling the environment in a grow room6 Oct 2026US 12,751,465 B2JDS Consulting
- Unmanned aerial vehicle (UAV) landing systems6 Oct 2026US 12,756,053 B2United Parcel Service of America, Inc.
- Cooled container and method for distributing cooled items22 Sep 2026US 12,742,583 B2MEDSZGO Holding BV
- Piezoelectric MEMS-based active cooling for heat dissipation in compute devices22 Sep 2026US 12,745,638 B2Frore Systems Inc.
- Apparel thermo-regulatory system15 Sep 2026US 12,733,697 B2NIKE, Inc.
- Tempering device for controlling the temperature of a living being8 Oct 2026US 2026/0306315 A1Kohlbrat & Bunz Gesellschaft mbH
- Fluid cooling plant and refrigerant module thereof8 Oct 2026US 2026/0309376 A1Nuovo Pignone Tecnologie Srl
- Heat dissipation control method and heat sink system8 Oct 2026US 2026/0309377 A1Tilta Inc.
- Magnetic field fresh-keeping apparatus and air-cooled refrigeration device8 Oct 2026US 2026/0309405 A1Haier Smart Home Co., Ltd.
- Multimaterial heat-transfer systems with controlled interface behavior1 Oct 2026US 2026/0298508 A1
Most cited
By later US patents
- Temperature controlled cooling system395US 5,097,829 A1992
- Storage device for the delivery and pickup of goods349US 5,774,053 A1998
- Therapeutic hypothermia instrument303US 4,483,341 AAtlantic Richfield Company · 1984
- Cooling system for computer299US 5,731,954 A1998
- Blanket assembly and selectively adjustable apparatus for providing heated or cooled air thereto255US 4,777,802 A1988